Flashback Trojan

Windows-intended Malware Infecting Macs

While most viruses hits the Windows platform, Mac users are so confident that their computers don’t need an Anti-virus as it rarely or never happens in their platforms. But news are coming out that there is a malware intended for Windows that is creeping inside Macs.

Around one in five Mac pcs are contaminated with some type of malware, though most of it is designed for Windows-based computers.

A new version of the Flashback Trojan that attacked over half a million Macs lately, in the meantime, is currently creeping again, based on separate report.

Sophos, a secrurity company, assessed around 100,000 Macs with the Apple’s Mac anti-virus software installed, and discovered that 20% were having several cases of Windows malware. About 2.7% were contaminated with Mac OS X malware.

“Although Windows malware on Macs won’t cause symptoms (unless users also run Windows on their computer), it can still be spread to others,” According to Graham Cluley, an analyst from Sophos, in a blog post.

Cluley compared the propagation of Windows-based malware on Macs to Chlamydia, a sexually transmitted disease. “Just like malware on your computer, Chlamydia commonly shows no obvious symptoms. But left undetected Chlamydia can caused serious problems, such as infertility,” he stated in the post.

He also stated that the malware could have been removed if the users used the company’s Anti-virus software. “Malware can spread onto Macs via USB drives, email attachments, website download, or even a silent drive-by installation where the user doesn’t realise their Mac’s security has been subverted,” he added.

Hackers aim for Macs mostly since users are so confident that anti-virus software is not needed. “Bad guys may also believe that Mac users are likely to have a higher level of disposable income than the typical Windows user. So, they might believe the potential for return is much higher,” according to Cluley.

There were inconsistent information concerning if the malware has been eradicated from Macs or not. A new statement from Intego, on the other hand, states that a new version of Flashback malware is silently creeping in again.

Flashback.S “continues to use a Java vulnerability that Apple has patched,” according to Peter James of Intego in a blog post. “No password is required for this variant to install, and it places its files in the user’s home folder.”

He encouraged Mac users to use the company’s Anti-virus software or download the Intego’s VirusBarrier X6.